fix(gitFs): rewrite git 5xx errors to platform-failure

lib/workers/repository/error.js

@@ -120,6 +120,16 @@ async function handleError(config, err) {
     delete config.branchList; // eslint-disable-line no-param-reassign
     return err.message;
   }
+  if (
+    err.message.includes('unable to access') &&
+    err.message.includes('The requested URL returned error: 5')
+  ) {
+    logger.debug({ err }, 'git 5xx error');
+    logger.warn('Git error - aborting');
+    delete config.branchList; // eslint-disable-line no-param-reassign
+    // rewrite this error
+    return 'platform-failure';
+  }
   // Swallow this error so that other repositories can be processed
   logger.error({ err }, `Repository has unknown error`);
   // delete branchList to avoid cleaning up branches

test/workers/repository/error.spec.js

@@ -41,6 +41,13 @@ describe('workers/repository/error', () => {
         expect(res).toEqual(err);
       });
     });
+    it('rewrites git error', async () => {
+      const gitError = new Error(
+        "fatal: unable to access 'https://**redacted**@gitlab.com/learnox/learnox.git/': The requested URL returned error: 500\n"
+      );
+      const res = await handleError(config, gitError);
+      expect(res).toEqual('platform-failure');
+    });
     it('handles unknown error', async () => {
       const res = await handleError(config, new Error('abcdefg'));
       expect(res).toEqual('unknown-error');